ASTROSAT CZTI

Data Quality Report

Orbit 46841

Creation date: 2024-06-27T23:28:21.869322
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A13_053T01_9000006274_46841cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46841cztM0_level2_quad_clean.evt
Size (bytes)542,413,440125,907,840
Size517.3 MB 120.1 MB
Events in quadrant A7,137,207837,502
Events in quadrant B4,130,755867,222
Events in quadrant C3,493,307823,891
Events in quadrant D4,706,501736,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261991
B0176611
C0163541
D0198391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140149771761704140149077835822
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78732352.984885%
B7873971.232059%
C7873200.254033%
D78733284.166137%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7873 7873 5 5 0.06% 0.06%
B 7873 7873 17 17 0.22% 0.22%
C 7873 7873 4 4 0.05% 0.05%
D 7873 7873 253 253 3.21% 3.21%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 3721476 20492.31 871 852 181.6
A 13 248 16640 86.96 871 852 181.6
A 13 254 13590 70.16 871 852 181.6
B 3 112 482996 2825.44 870 843 170.6
B 0 200 43141 247.87 870 843 170.6
B 7 221 40018 229.57 870 843 170.6
C 1 241 133600 660.15 858 861 201.1
C 12 2 8373 37.36 858 861 201.1
C 14 67 5957 25.34 858 861 201.1
D 13 249 721326 3407.29 842 814 211.5
D 1 52 479024 2261.44 842 814 211.5
D 5 171 83841 392.63 842 814 211.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter